438 U.S. NATIONAL MUSEUM BULLETIN 2 88 



interorbital diameter 1% times that of upper eyelid, a little greater 

 than interval between nostrils. Tympanum small but distinct, its 

 greatest diameter one-third that of eye, separated from eye by an 

 interval equal to its own diameter. Fingers moderately long, disk of 

 first finger relatively small, all with lateral ridges, free, first finger 

 shorter than second, fourth longer than either and reaching nearly to 

 base of disk of third, which is twice the size of the tympanum; a 

 crescentic thumb pad present; a bilobed palmar callus; metacarpal 

 tubercles well developed. Toes scarcely webbed, moderately long, 

 third toe shorter than fifth, the disk of which reaches to base of 

 antepenultimate phalanx of fourth; disk of fourth toe three times the 

 size of the tympanum and larger than that of third finger; some of 

 the toe and finger disks slightly pointed; a small, flattened inner 

 metatarsal tubercle and a smaller rounded outer one; no tarsal ridge; 

 a heavy skinfold on heel and knee. Body rather elongate, in post- 

 axillary region narrower than greatest width of head. When hind leg 

 is adpressed, heel reaches center of eye; when limbs are laid along the 

 sides, knee and slbow are slightly separated; when hind legs are bent 

 at right angles to body, heels greatly overlap. Skin smooth on head 

 and anterior half of back, very faintly pustular on the sacrum; venter 

 finely granular, the granules on center of throat very minute; a 

 narrow glandular ridge from posterior corner of eye above tympanum, 

 ending in a long dorsolateral skinfold from eye, above shoulder, and 

 nearly to groin; no skinfold across chest; a prominent ventral disk; a 

 gular disk appearing as ( )-shaped skinfolds below the chin, and 

 serving as a vocal sac in the male. 



Dimensions. — Head and body, 22.5 mm.; head length, 8.5 mm.; 

 head width, 8.5 mm.; femur, 9.5 mm.; tibia, 12 mm.; foot, 8 mm.; 

 hand, 6.5 mm. 



Color in alcohol. — Head, sides, and back very pale vinaceous-buff , 

 with a narrow transverse clove brown bar between the eyes, and a less- 

 regular bar across the snout just in front of eyes; a wide brown canthal 

 stripe from nostril to eye, lighter and narrower above tympanum, and 

 continuing a little way along the dorsolateral skinfold; top of femur 

 covered with minute dots of pale wood brown lightening on anterior 

 and posterior surfaces, and similarly covering upper tibia, foot, and 

 arm. Margin of upper lip pale buff, with a suffusion of minute drab 

 dots below the dark canthal stripe; venter immaculate pale cream 

 buff, the lower surface of foot and hand with pale drab suffusions. 



Remarks.— The paratype (USNM 151401) is like the holotype in 

 color except that the disks of toes and fingers are accented with darker 

 brown below, the tubercles beneath the toes are ringed with brown, 

 and there is a suffusion of russet spots across the snout in front of the 

 eyes instead of a dark transverse broken bar in that area. 



